Home / 13,538.91-20,308.37-5,742.66

Finding the Fourth Proportional to 13,538.91, 20,308.37 and 5,742.66

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Solution

The fourth proportional to 13,538.91, 20,308.37 and 5,742.66 is: 8,613.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.91 : 20,308.37 = 5,742.66 : x
  2. Step 2: Convert to fraction form
    13,538.91/20,308.37 = 5,742.66/x
  3. Step 3: Cross multiply
    13,538.91x = 20,308.37 × 5,742.66
  4. Step 4: Simplify right side
    13,538.91x = 116,624,064.06
  5. Step 5: Solve for x
    x = 116,624,064.06/13,538.91
  6. Step 6: Final answer
    x = 8,613.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.